“Today,” Mother Jones‘s James Ridgeway reports, “roughly 1 in 12 state and federal prison inmates is 55 or older.” Prisoners sentenced to life without parole will die in prison, so that means they’ll convalesce there too. In other words, prisons are part nursing home and, according to a report from the ACLU, the number of elderly prisoners is expected to skyrocket:

Imprisonment is already expensive, but aging patients cost twice what a younger prisoner costs. Today, we spent $16 billion a year to house elderly prisoners, Soon we’ll have to start renovating our prisons.

Some argue for “compassionate release.” After all, elderly prisoners have a very low recidivism rate. But the ACLU cautions us to remember that release shouldn’t mean abdicating responsibility. “For many elderly prisoners,” the director of the ACLU’s National Prison Project explains, “particularly those with serious medical needs, simply pushing them out the prison door will be tantamount to a death sentence.”